Evaluate without 3 5 Cos 13 using calculators: cos sin -- -

Q: Find the exact value of the following. 1. sin cos 147 COS 15 2. Cos 3. sin ( tan 4. cot(csc (-3))

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Q: Evaluate without using a calculator.      cos  (cos    -1 5/13)

A: coscos-1513

Q: Which hyperbolic identity corresponds to the trigonometric identity                    sin2x = (1 −…

A: Given

Q: 1) cos-105°

A: As per rule of bartleby we can solve only one question at a time and we can solve only three subpart…

Q: Use your calculator to evaluate cos '(0.47) to at least 3 decimal places. Give the answer in…

A: Here I am attaching image so that you understand each and every step.

Q: Evaluate without using a calculator.      cos  (cos    -1 1/2)

A: given: coscos-112 we know that coscos-1x=x

Q: what is cos(tan^−1(−1/2))

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Q: Find the value of sin40 cos20 +cos 40 sin20

A: sin40 cos20 +cos 40 sin20we will use  cos(a)cos(t)-sin(s)sin(t)

Q: Find cos2θ if sinθ=7/25

A: From the given information, sin ϴ = 7/ 25.Known fact,  cos 2ϴ = 1 - 2 sin2 ϴ.

Q: Use a calculator to find a decimal approximation of cos22°/sin22°. Simplify the expression first.…

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Q: Please show how to draw this on the quadrant.

A: Given:

Q: What is the exact value of cos 157.5° using half-angle identities?

A: We know: cosx2=±1+cos x2   (half angle identity for cosine) Substituting x=315° we get:…

Q: Find the exact value of the expression cos-1(cos 2 π), if possible. Do not use a calculator.

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Q: 4. Verify that cos = sin x.

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Q: Evaluate cos (sin + cos 2

A: We use the identity sin-1x+cos-1x=π/2

Q: Find sin0 & cos 0 if give 7 and 90°<0 <180°. 12 cos 20 =

A: 90°&lt;θ&lt;180°    then sin θ = + ve    cosθ = - ve

Q: without using calculato find :   cos(225)sin(315) + 1/2sin(-270)tan(405)

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Q: Give the exact value of the expression without using a calculator. 4 - 1 tan 3 COs tan - 1 12

A: Use the inverse trigonometric identities and solve the problem.

Q: Evalnate without using Calculator (^) Cos 2 () -9 (6) Sin 15°

A: a) We know that Therefore, we have

Q: Use trigonometric identities to solve cos(2θ)−cos(θ)=0 exactly for 0∘≤θ&lt;360∘

A: Given equation,

Q: Evaluate the expression without using calculator. 10) cos 0° - 8 sin 90°

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Q: Evaluate without using a calculator.     cos    -1 ( cos 120 degree )

A: We hvae to calculate the value of - y = cos-1(cos120°)We can write it as -Using trigonometric…

Q: Evaluate without using a calculator.     cos    -1 ( cos 45 degree )

A: It is known that cos-1cosθ=θ  provided 0≤θ≤180°. The given expression is cos-1cos45°

Q: Find cos θ and sin θ if tan θ = 4 and π ≤ θ &lt; 3π/2

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Q: Evaluate without using a calculator.     cos    -1 ( cos 7pi/4)

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Q: Find cos 20 if sin 0 = cos 20

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Q: If sin18 = 0.309, determine the value of cos 72

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Q: Evaluate without using 4 5 - COs 13 calculators: cos sin -1

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Q: Find sin θ if cot θ = - 2 and cos θ &lt; 0.

A: To determine the value of sin(θ).

Q: evaluate exactly sin(cos-1(2/3))

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Q: what is cos(arccos(-3/7)) ?

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Q: Evaluate without using calculators: cos sin cos 5 13

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Q: Evaluate without using a calculator.     cos    -1 ( cos 7pi/6)

A: Given cos-1cos7π6

Q: Use an Addition or Subtraction Formula to simplify the equation. sin(30) cos(0) – cos(30) sin(0) %3D…

A: Given equation is sin3θcosθ-cos3θsinθ=12. Note that, the difference formula of sine is…

Q: Give the exact value of the expression without using a calculator. sin 2 cos

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Q: What is cos10∘cos8∘−sin10∘sin8∘ equal to?

A: To solve the problem we must know about sum and difference formula of sinθ  and cosθ.  We have to…

Q: Verify the identity by transforming the lefthand side into the right-hand side.

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Q: Give exact values for cos 30°, sin 30°, cos 60°, sin 60°, cos 90°,and sin 90°.

A: Exacts values  for  a)  cos 30° b) sin 30° c) cos 60° d) sin 60° e) cos 90°,and f) sin 90°.

Q: Evaluate without using a calculator. cos-(cos - -1(cos )

A: We have

Q: Use exact values to show that the following is true. cos 120° = cos? 60° – sin?

A: We know that Therefore, we have

Q: Evaluate without using a calculator. tan(cos−1 9/15)

A:

Q: 3 Evaluate: cos (sin¯ )) without using 10 calculator..

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Q: Evaluate a)  2 cos180°/sin90° and  b) sin 150⁰

A: Solution: The objective is to find the required values

Q: Evaluate without using a calculator.       tan ( cos  -1 12/13)

A: Let us consider that cosθ=1213 On using a right angled triangle, we value of tanθ as In right…

Q: If sinA = 4/5 with A in QII, and sin B= -3/5 with B in QIV, find cos (A-B)

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Q: Verify the identity: (1 + cos θ)/sin θ = csc θ + cot θ.

A: Verify the identity.

Q: If csc(x) = 8, for 90° < x < 180°, then sin) Preview %3D cos) Preview COS %3D Preview tan 2 %3D

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Q: Evaluate without using a calculator.       cos ( tan  -1 1/3)

A: Given : = cos ( tan  -1 1/3)   Put tan-1 1/3 = θ         tan θ = 1/3 = cos θ  = 1/√1 + tan2 θ = 1/√1…